请各位大神帮我写一篇英语作文
题目
请各位大神帮我写一篇英语作文
开头:lisd had a good time in hongkong 结尾：ali in all she had a good vacation 的作文
答案
Lisd had a good time in hongkong she went to Disneyland in HongKong.It’s very very big.When she went into it,she could see many shops.There were many toys and clothes in them.They were very interesti...
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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